1. Ubuntu Security Notices
  2. USN-5380-1

USN-5380-1: Bash vulnerability

Publication date

20 April 2022

Overview

Bash could be used to escalate privileges.

Releases

Packages

  • bash - GNU Bourne Again SHell

Details

It was discovered that Bash did not properly drop privileges
when the binary had the setuid bit enabled. An attacker could
possibly use this issue to escalate privileges.

It was discovered that Bash did not properly drop privileges
when the binary had the setuid bit enabled. An attacker could
possibly use this issue to escalate privileges.

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal bash –  5.0-6ubuntu1.2
18.04 bionic bash –  4.4.18-2ubuntu1.3
16.04 xenial bash –  4.3-14ubuntu1.4+esm1  
14.04 trusty bash –  4.3-7ubuntu1.8+esm2  

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References

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